Springless suspension for vehicles.



G.BRAVL SPRINGLESS SUSPENSION FOR VEHICLES.

APPLICATION FILED JUNE 4.1914.

1,142,395 Patented June 8, 191.5.

3 SHEETS-SHEET 1.

e. BRAVI.

SPRINGLEISS SUSPENSION FOR VEHICLES.

APPLICATION FILED 1UNE4. 19H.

1 1 42, 395 Patented June 8, 1915.

&% I MWW Th: NORRIS PETERS 60.. PHOTD-LITHQ, WASHINGTON, D C.

e. B'RAVIQ SPRINGLESS SUSPENSION FOR VEHICLES.

APPLICATION FlL ED JUNE 4. 1914.

1,142,395. Patented June 8,1915.

3 SHEFTS-SHEET 3.

I THE NORRIS PETERSIOO-I Pnomu'rna. WASHING TON. D. C.

. n s rnrns Parana cr mson. I

GIUSEPPE BRAVI, OF LANSDALE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF T0 SANTE T. ALLEVA, 0F NQRRISTOWN, PENNSYLVANIA.

SPRINGLESS SUSFENSION FOR VEHICLES.

Specification of Letters Patent.

Patented June 8, 1915.

Application filed .Tune l, 1914. Serial No. 842,872.

To all whom it may concern:

Be it known that'I, Giosnrrn BRAVI, a subject of the King of Italy, residing at Lansdale, in the county of Montgomery and State of Pennsylvania, have invented new and useful Improvements in Springless Suspension for Vehicles, of which the following is a specification.

My invention relates to new and useful improvements in springless suspensions for vehicles, and has for its object to so construct such a device as to overcome the necessity forthe use of springs and other such devices to take up the shock incidental to a vehicle traveling over rails or road bed, and to keep the vehicle upon a level, regardless of the up and down movement of the wheels in riding over unevennesses or other obstructions.

With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention. appertains may understand how to make and use the same, I will describe its construction in detail, referring by numeral to the accompanying drawings forming a part of this specification, in which Figure 1, is a side elevation of a truck to which my invention is applied showing the oscillating journal boxes in the position they assume, the front end of the truck having been slightly lowered and the rear end correspondingly elevated. Fig. 2, is a similar view showing the position assumed by the oscillating journal boxes, when the truck is in its normally horizontal position.

Fig. 3, is a similar view showing the oscillating journal boxes in the position they assume when the rear end of the truck is lowered and the forward end elevated. Fig. 4, isa plan view of Fig. 2. Fig. 5, is an end view of Fig. 4. Fig. 6, is an enlarged detail view of oneof the oscillating ournal boxes. Fig. 7 is a side view of Fig.

6. Fig. 8, is a plan View of Fig. 6; and Fig. 9, is a section at the line c2 of Fig. 7

It is to be understood that my invention is applicable to various forms of trucks, and the running gear of other vehicles, and that it is not my intention to limit myself to the details of construction here shown as these are only to illustrate the principle of my invention as applied to one form of truck.

In carrying out my invention as here embodied 1 represents a truck frame, which is hinged or pivoted to the bolster 2 upon which latter a portion of the vehicle rests, as for instance, one end of an ordinary railway .car, thus giving the truck frame a free swinging or see-saw movement as will be readily understood.

Within the ends of the truck frame are set the journal boxes 3 having their central portions in the form of eccentrics 4: which are so fitted in their bearings as to have a free rotary or oscillating movement, which movement is limited as hereinafter set forth.

The journal boxes have the axle journals of each pair of wheels 5 journaled therein in any well known or convenient manner so that when the journal boxes are stationary, the truck will operate in all respects as does the ordinary truck.

6 represents a chain which is attached to the lug 7 on each of the journal boxes. Each chain comprises one'forward and one rear journal box as clearly shown in Figs. 1, 2, and 8, thus tying each pair of boxes together, so that when one is moved, the other will be pulled a corresponding dis tance, it being understood that cables may be used instead of chains.

8 are stops in the form of lugs set in the truck frame and projecting beyond the sides thereof in the path of the movement of the lugs 7 upon the oscillating journal boxes, so that the movement of these journal boxes will be limited by the contact of the lugs and stops.

When the truck is at rest the oscillating journal boxes will assume the position shown in Fig. 2, but when the truck is traveling in the direction of the arrow a, any obstructions met by the forward wheel will tend to arrest its motion, when the momentum of the vehicle and truck will exert a forward thrust upon the bearings and this thrust will revolve the forward journal boxes and through the chains cause the rear journal boxes to oscillate through a like number of degrees of the are, thus raising the rear end of the truck and lowering the forward end thereof in exact proportion to the rise which has been given the forward pair of wheels met in the road bed. This will absorb the vertical motion which would have been otherwise transmitted to the vehicle resting upon the truck, avoiding the vibration and jar which would otherwise be transmitted to said vehicle. The same will happen Whenthe rear pair of wheels come in contact with any obstruction or unevennesses in the road bed, but of course in a reverse direction as shown in Fig. 3. i From the foregoing description it will be seentha-t as each pair of wheels rises and falls in passing over unevennessesor are retarded by obstructions the momentum of the vehicleoscillates the journal boxes and as they are set eccentric relative to the wheel -journals, the frame will be oscillated or see sawed upon its pivot to a degree equivalent to the elevationof either pair of wheels and thus leave the body of the vehicle in its normal position, avoiding the transmission of shock and vibration to said vehicle. I

Of course I do not wish to be limited to the exact details of construction as here shown, as these may be varied within the limits of the appended claims without departing from the spirit of my invention. Having thus fully describedmy invention, what I claim as'new and useful, is+

'1. A 'springless suspension for vehicles consisting of a hinged truck frame, oscillating journal boxes fitted in said frame, two pair of wheels, e'achpair having'a common' axle, the journals of said wheels projecting into said journal boxes off the center 'of'the oscillation of said boxes, stops carried by the truck frame for limiting the oscillation of the journal boxes and means for connecting the journal boxes in pairs for '(foiiies of-this patent may be obtained for'five, cents each, by addressing the Commissioner 01 mane,

causing said journal boxes tooscillate in which the wheel j-ournals are eccentrically set and means for oscillating the pairs of ournal boxes in unison'reversely,

3. A springless ,SUSPBHSIOII for vehicles 'comprismg twopair of journal boxes in which the wheel journals are eccentrically set, and means" for oscillating the pairs of other pair is raised for absorbing shocks.

at. A springless suspension for vehicles consisting of a truck frame, two pair of journal boxes fitted in said truck frame," so 7 as to oscillate therein,-l""axles -eccentrically journaled in'said boxes, wheels mounted on r consisting of, a truck frame'ftwo pair. of 'JOUIIlEll boxes'fitted insaid truck frame, so as to, osclllate' therein, axles .eccen'trlcally j ournaled in said boxes, wheels mounted on said axles, means connecting each pairof 7 70 journal boxes on the same'side of the truck journal boxes in unison, whereby one pair of' sald ournal boxes is lowered, wh le the for oscillating the pai'rsof journal boxes in l/Vitnesses: r o p r a W. lilAMiLTON Rose,

S. T; ALLEVA.

Washington, D. 0

unison, and means for limiting the oscil- Vlation ofthe journal boxes. 'f p L In testimony whereof, I have'hereunto" presence of two i 

